ENS 55999
ENS Event | |
|---|---|
04:00 May 19, 2022 | |
| Title | Part 21 Report - Potential Premature Failures of Valcor Coil Shell Assemblies |
| Event Description | The following is a synopsis of information received via facsimile:
Valcor Engineering Corporation (VEC) was notified via a letter dated 5/19/2022 that Catawba Nuclear Station (CNS) discovered two failed Coil Shell Assemblies, part number V52653-6040-7, which were removed from V70900-39-3-1 Solenoid Valves and returned to VEC for evaluation. VEC has not concluded this is a reportable condition in accordance with 10 CFR 21.22(d) and requires additional time to complete testing and evaluation. VEC is submitting this 60-day Interim Report Notification per 10 CFR 21.21(a)(2). VEC will complete the evaluation and provide a determination of reportability in accordance with Part 21 no later than 09/12/2022. Currently, Catawba Nuclear Station is the only affected facility. For additional information, please contact Mike Swirad, Valcor Engineering Quality Assurance Director (973-467-8400 x 7223)
The following is a synopsis of information received via facsimile: VEC is providing final notification with regard to defects in coil shell assemblies (part number V52653-6040-7) per 10CFR Part 21.21(d)(4). The root cause of failure of this part was determined to be an internal short in the coil shell assembly. In addition to Catawba, licensees affected are: Brunswick, Callaway Energy Center, Oconee, Braidwood, and Fitzpatrick. Root cause of the failed component is inconsistency in the coil assembly manufacturing process. VEC initiated internal and supplier corrective actions and all coil shell assemblies have been quarantined and VEC supplier was notified. All existing coil assemblies in stock will be reworked to conform to VEC drawings. Completion of rework expected within 60 days. VEC is in the process of notifying all affected customers. Defect can not be visually or electrically identified. All coil assemblies that perform safety related function must be returned to VEC for evaluation/replacement. For additional information, please contact Mike Swirad, Valcor Engineering Quality Assurance Director (973-467-8400 x 7223) Notified R1DO (Young), R2DO (Miller), R3DO (Hanna), R4DO (Drake) and via email: Part 21 Reactors. |
| Where | |
|---|---|
| Valcor Engineering Company York, South Carolina (NRC Region 1) | |
| Organization: | Valcor Engineering Company |
| Reporting | |
| 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component | |
| Time - Person (Reporting Time:+1448.15 h60.34 days <br />8.62 weeks <br />1.984 months <br />) | |
| Opened: | Michael Swirad 12:09 Jul 18, 2022 |
| NRC Officer: | Ernest West |
| Last Updated: | Sep 12, 2022 |
| 55999 - NRC Website
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Valcor with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect, 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component | |
WEEKMONTHYEARENS 569072023-10-23T06:00:00023 October 2023 06:00:00
[Table view]10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 Report - Defect in Valcor Solenoid Valves ENS 559992022-05-19T04:00:00019 May 2022 04:00:00 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect, 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 Report - Potential Premature Failures of Valcor Coil Shell Assemblies ENS 524072016-12-05T05:00:0005 December 2016 05:00:00 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 - Non-Conforming Cover Machining on Solenoid Valve ENS 507992015-02-09T05:00:0009 February 2015 05:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 Report - Possible Assembly Error in Solenoid Valve ENS 499042014-01-11T04:00:00011 January 2014 04:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 - Ap-1000 Solenoid Operated Valves Leakage 2023-10-23T06:00:00 | |